George d



@uitrit tatrs atznt @fitta GEORGE D. HADLEY, OF CINCINNATI, OHIO, ASSIGNOR TOA HIMSELF AND GARDNER WATERS, OF SAME PLAGE.

Letters Patent No. 81,893, dated September 8, .1868.

IMPROVEMENT IN GLOBE-VALVES.

TO ALL WHOM IT MAY CONCERN:

Be it known that I, GEORGE D. HADLEY, ofCincinnati, countyof Hamilton, State of Ohio, have inventeda new 'and improved Steam GlobeValve; and I do hereby declare that the following is a full, clear, and correct description thereof, reference being had to the accompanying drawings, and to the letters ofreference thereon marked, making a part of this specification. v i

This invention relates to a new and improved method of constructing globe-valves for steam purposes, and consists in forming that part of the valve at which its two main portions are united, in a peculiar way,which makes-it, it is believed, simpler, better, and cheaper than any other valve of its class.

Instead of the lock-nut ordinarily used for coupling together the two parts ofthe valve, [form the inner 'surface of the upper portion ofthe shell or main body ofthe valve atfits lower end with a thread, and its upper y end left blank, and the outer surface of the lower part of what I call the stand (marked D in drawing)'in a corresponding way, that is, threaded at its lower end and left blank above.

Constructed inthis way, the most ordinary hand can easilyV and readily grindhe valve in and to its seat, without disconnection from the pipes to which it may be attached, and without endangering any threads.

The whole exterior'surface ofthe stand" may be threaded.

The drawing represents the cock in vertical central. section, clearly indicating all the parts, and plainly showing the improvement. I

C represents the shellor -body of the cock; E, the valve; F, the handle, affixed to the stem of the valve; G, the stuiling-box; D, the stand; A a, the blank and threaded interior surface of the upper'portion of the shell or body of the cock; B b', the exterior corresponding blank and threaded surface of the stand.

Now, when the screw is relieved from the screw a, and the valve E is bearing upon its seat, it canbe readily perceived that the blank portions A and B will form a. perfect guide for the purpose of grinding the valve to its seat,rwithout the necessity of removing the handle F or the packing from the stuing-box G, or the body of the cock itself from the pipes to which it isv attached.

I claim a globe-valve, when constructed with blank surface, A, above the screw a in the bodyor shellof.

the valve, and the corresponding blank surface, B, above the screw b on the stand D, so that when the screw b is relieved from the screw a, and the valve E is bearing upon its seat, the blank surfaces A and B shall form a perfect guide for the purpose of grinding the valve to its seat, without being obliged to remove the handle or the packing from its stufhng-box, or the body of the valve from its connections. l

GEO. D. HADLEY. Witnesses:

C. L. FrsHEn,

S. R. RUSSELL. 

